Stave-finishing machine



I 1,645,015 O 7 1927' o. A. MELANG STAVE FINISHING MACHINE Filed Aug.12. 1924 3 Sheets-Sheet 1 gjwmmtcm 0/2 A; Meiang l 645 015 06L 11, 1927.o. A MELANG V I a 9 STAVE FINISHING MACHINE Filed Aug. 12. 1924 3Sheets-Sheet 2 Ole A.M1ang 1,645,015 Oct. 11, 1 MELANG STAVE FINISHINGMACHINE Filed Aug. 12. 1924 3 Sheets-Sheet 3 Ole A. Melaflg 1d ammwPatented Get. 11, 1927. Y I

UNITED STATES FF! E one A. MELANG, or SEATTLE, wasnmeron.

STAVEEIN'ISHING MACHINE.

Application filed August 12, 1924; Serial No. 731,546.

My invention relates to machines for finshaft 1. This forms a guidewayover which ishing staves. the staves are moved while being operated Theobject of my invention is to provide upon by the end-finishing cuttei 'sand the a machine which at one time will chamfer sanding drum; To insurea: positive feed of and croze the ends of the staves' and sand thestaves and also to maintain them with paper the two faces thereof.certainty in directions which extend truly My invention consists,essentially, in the lengthwise of the cylinder outlined by the peculiarconstr'uct'ions employed for doing feeding drums, I prefer that thefeeding thi drums 10 be provided with pins or pro'ge'c- 1c The novelfeatures of my invention will tions 14 of less length than the thicknessof be hereinafter described and then specifithe staves. Staves are fedto the feeding cally set forth in the claims. drum by hand, and occupythe space be- The accompanying drawings show my tween successive pins orprojections 14; present method of constructing the machine. These engagethe edges of the staves and in- Figure l is a side elevation of themachine sure that they pass through the machine in with portions of thesupporting frame in correct position. section. Two end-finishingmechanisms, essentially Figure 2 is a plan view of the same mathe same,are provided, one for each end of chine with a portion of the upper partof the stave, and these operate simultaneously 20 the frames in sectionand removed. 4 upon the opposite ends of th same stave.

Figure 3 is an end view of the machine Such finishing mechanisms consistof a cutwith portions of the frame 1n section. ter head 3 havingsuitable knives thereon Figure a is a detail showing of an edge mountedupon a shaft 30 which is iournaled view of one of the cutters employedfor finin bearings 31 at each end of the frame. as ishing the ends ofthe staves. The cutter head is provided with a cutting- This machine isintended for operating off saw 32 atone side thereof. Next to this uponstaves which have been sawed out of is a coned section 33 havingadjustable transversely curved shape to conform to the blades adapted toform the bevel or chamfer curvature of the finished keg or barrel and atthe end of the stave. This blade is also S5 with their edges jointed,that is, beveled and preferably provided with a short section 34 shapedto the form of the finished stave. which is designed to dress acylindrical surlVhile it is preferred to have the latter opface, andnext to this are cutting blades 35 eration, namely the shaping of theedge surwhich form the croze or groove in which the faces of the stave,performed before finishedges of the barrel head are placed. It is 9 ingin the machine which forms the present evident that all of these cuttersmay be made invention, it is evident that the order may to finish thestave in any shape and pattern be changed so as to have this particularpart desired. The particular shape and pattern of the manufacturingoperation performed of this cutter shown in the drawings is only afterthe stave has been treated by the pres given as an illustration of acutter intended cut machine. for finishing the ends of the staves in apar- A shaft 1 is supported in suitable bearings ticular manner. It isdesirable, however, in and has thereon a pair of feeding wheels order toinsure uniformity of the stares, and 10 which are designed to engage thetwo the same relationship between the several ends of the staves andfeed them to and cuts, that they all be performed at the same past theend of the finishing cutters and the time by the single cutter head.

sanding drum which surfaces one face there- It is essential that thedepth of the croze of. This shaft 1 is shown as journaled in be uniform,not so much with respect to the hangers 11 which depend from a member ofinner surface of the stave, as with respect to the frame. It is driventhrough the action its outer surface, for the assembling of the 50 of apulley 12 carried by the shaft 1 and a barrel, and consequently thelining up of the belt 13 running thereon, from any suitable width anddepth of the crozes in adjacent source of power. staves, is controlledaltogether by the en- A transverse member 20 of the general gagement ofhoops with the outside of the frame 2 extends beneath the feed wheels 10staves. I have found that the only way in 1 and has a concave curvedsection 21 concenwhich uniformity of the croze with respect trio incurvature with the center OI me to the outside surface of the barrel canbe secured is to finish this outside surface of the stave, as bysanding, at thesame time the crozing is done, and while the crozingcutters are engaging the stave. First finishing the outside, and thencrozing the stave will produce only approximate results for the reasonthat in shifting position between two separate stations Where the staveis to be operated upon, the stave is bound to be shifted somewhat,however slight, relative to its carrier, and thus a variation betweenthe outside and the bottom of the croze will result. Further, thisnecessitates another operation, involving the employment of anotheroperator and another machine and the investment and operation cost ofthe second machine. First crozing the stave and then sanding it on theoutside is worse, for this cannot possibly produce a uniform stave suchas is required in tight barrels.

For the purpose, then, of securing absolute uniformity of the staves,assuring exact conformity of their crozes when their outer surfacesconform, and eliminating so far as possible, investment in materials andcost of power and labor, I provide a sanding roller or drum 4:,positioned to engage the outer surface of the stave as it passes underthe cutter heads 3, the operation of the cutter heads and sander beingsimultaneous. This sanding drum 4 may be journaled in the frame, itsshaft 40 being provided with a pulley 41 by which it is turned.

As the staves are delivered from the feeding disks or drum 10 they arereceived upon a conveyor, herein illustrated as an endless chain or belt5 which passes over sprocket gears and which is provided with upwardprojections or lugs. 51 which engage with the edges of the staves andcarry them beneath a sanding drum 6, which sands the upper or concavelycurved face of the staves. The exact relationship between the bottom ofthe croze and the outer surface of the stave having previously beensecured, it is not essential that the depth of the croze relative tothis inner surface'be exact.

By the use of this device both ends of the staves are completelyfinished and the two major faces are also sanded. Each and every staveis therefore a duplicate of the other staves in this respect. They maythus be assembled after complete finishin with a certainty that theywill fit in p ace, and with the certainty that, when hoops cause theirouter surfaces to coincide, the crozes will align in height and depth,to receive the circular heads.

What I claim as my invention is:

1. A stave finishing machine comprising means for feeding the stavestransversely of their length, a revolving cutter engaging each end ofthe staves as they are advanced by the feeding means to thereby chamferand croze the staves, and a sander engaging the outer face of the staveduring their engagement by said cutters.

2. A stave finishing machine comprising means for feeding the stavestransversely of their length, revolving cutters positioned to engage theopposite ends of a stave simultaneously as it is advanced by the feedingmachine, thereby to croze the inside of the staves, and a sanding devicepositioned to engage the outside of the stave, substantially throughoutits length, during its engagement by said cutters.

In a stave finishing machine, a curved guide, a substantially straightguide forming a continuation thereof, a pair of endlinishing cuttersrotatable concentrically with said curved guide, means for advancingindividual staves in a direction transversely of their length over saidguides and past said end-finishing cutters, whereby both ends arefinished simultaneously, a trans versely extending rotary sanderpositioned to engage the entire length of a stave during its engagementby said end-finishing cutters to finish its outer surface, and a secondtransversely extending rotary sander positioned above said straightguide to engage the inner surface of a stave from end to end after itsreleasefrom said first sander and said end-finishing cutters.

Signed at Seattle, King County, \Vaslr ington, this 12th day of July,1924. I

OLE A. MELANG.

